ERRATA. 
Page 21, line 3 from bottom to read : —“ Sepals 6, very thin and membra¬ 
nous, deciduous from the bud without expanding, subtended by 
3 green early deciduous bracts.” 
“ 22, line 12 from bottom, transfer “ pendulous ” to the sentence pre¬ 
ceding “ Embryo.” 
u 32, last line, for “ margined ” read “ marginless.” 
u 40, last line but one, add “ Also, Chelsea, Massachusetts.” 
u 41, last line but one, for “ R/iaphanlstrum ” read “ Raphanistrum.” 
u 37, line 12 from top, for“ opposite ” read “ alternate with.” 
“ 66, line 3 from top, make the same correction. 
“ 66, line 8’from top, for “ verticellata” read “ verticillata.” 
u H7, to gen. char, of Gillenia add “petals convolute in the bud ! ” 
u 149, line 3 from bottom, after “ beaks ” add “ Seeds round-oval, wing¬ 
less.” 
tl 197, line 4 from top, for “ perfect ” read “ fertile.” 
u 203, line 4 from bottom, for “ amethystlnus ” read u amethystinus.” 
“ 293, line 1, for " DI ANTHER A ” read « DIANTHERA.” 
a 395, line 12 from top, after “ Stamens ” add 8. 
u 410, line 11 from top, after u stipules ” add u monoecious flowers.” 
“ 411, line 10 from top, for “ CARYA ” read “ CARYA.” 
11 314, line 11 from bottom, for cc sepals ” read ° petals.” 
11 632, line 4 from top, for u D. marginile” read “ D. marginalis.” 
u 630, line 14 from top, for “ Physcomitrium ” read “ Ptychomitrium.” 
u 630, line 6 from bottom, for u areolae. ” read tc areolation.” 
11 637, line 3 from bottom, for “sometimes tufted and” read “the latter 
fleshy and sometimes.” 
u 668, line 14, add “ shining ” after u pointed,” and erase “shining” in 
the line below. 
“ 678, line 9 from top, for “ slight” read “ slightly serrulate.” 
“ 686, line 8 from bottom, after “ auricle ” insert “ sometimes.” 
“ 687, line 9 from top, after “ auricle ” insert “ usually.” 
